EP2617550B1 - Verbundisolator zur Aufnahme einer Schneidekammer - Google Patents

Verbundisolator zur Aufnahme einer Schneidekammer Download PDF

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Publication number
EP2617550B1
EP2617550B1 EP13151108.1A EP13151108A EP2617550B1 EP 2617550 B1 EP2617550 B1 EP 2617550B1 EP 13151108 A EP13151108 A EP 13151108A EP 2617550 B1 EP2617550 B1 EP 2617550B1
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EP
European Patent Office
Prior art keywords
chambers
sleeve
chamber
insulator
diameter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP13151108.1A
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English (en)
French (fr)
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EP2617550A1 (de
Inventor
Camille LAPORTE
Yannick Kieffel
Thomas Berteloot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Technology GmbH
Original Assignee
General Electric Technology GmbH
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Filing date
Publication date
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Publication of EP2617550A1 publication Critical patent/EP2617550A1/de
Application granted granted Critical
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/56—Winding and joining, e.g. winding spirally
    • B29C53/58—Winding and joining, e.g. winding spirally helically
    • B29C53/60—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels
    • B29C53/62—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis
    • B29C53/66—Winding and joining, e.g. winding spirally helically using internal forming surfaces, e.g. mandrels rotatable about the winding axis with axially movable winding feed member, e.g. lathe type winding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
    • B29C53/80—Component parts, details or accessories; Auxiliary operations
    • B29C53/8008—Component parts, details or accessories; Auxiliary operations specially adapted for winding and joining
    • B29C53/8066—Impregnating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/6623—Details relating to the encasing or the outside layers of the vacuum switch housings

Definitions

  • the invention relates to an insulator made of composite material for containing a breaking chamber comprising a cylindrical part having two ends in which is housed the cutting chamber and a frustoconical portion at each of its ends.
  • Isolators are already known for containing a cutting chamber made of ceramic material having a barrel shape. These insulators are wider in the center because of the presence of the breaking chamber. On the other hand, on both sides of the interrupting chamber, the ceramic insulator comprises a portion of reduced section, for example a frustoconical portion. This reduces the overall volume of the chamber and consequently the amount of SF6 gas contained in this chamber.
  • Cutting chambers made by winding a resin-impregnated fiberglass filament on a cylindrical mandrel are also known. After winding the filament, the resin impregnated with fiberglass is polymerized in an oven and the insulator is demandrelated. According to this method it is impossible to make a barrel-shaped insulator because this form would be impossible to demandrinate. As a result, the interior volume of a composite insulator chamber is larger than the interior volume than a ceramic chamber. As a result, the amount of SF6 is greater in a composite chamber than in a ceramic chamber. As a result, composite chambers have a greater adverse environmental impact than ceramic chambers.
  • the present invention relates to the production of a barrel-shaped composite type insulator having a smaller section at each of its ends so as to reduce the internal volume of the chamber and consequently the amount of SF6 gas contained in this chamber. bedroom.
  • This device relates to tanks composed of an inner casing, an outer casing, and at least one metal base which comprises a cylindrical tip disposed substantially in the longitudinal axis of the reservoir.
  • the insulator is made of a first chamber and a second chamber, each of these chambers comprising a frustoconical portion itself followed by a cylindrical part, the first and the second chambers being assembled one at the other end to end by their cylindrical parts; in that the insulator further comprises an inner sleeve and an outer sleeve, the inner sleeve being disposed within the chambers, the outer sleeve being disposed outside the chambers, the inner sleeve and the outer sleeve overlapping butt assembly of the first and second chambers; in that the inner sleeve, the first and second chambers and the outer sleeve are made of composite material by helically winding a fiberglass filament, the winding angle (defined with respect to the axis of cylinder symmetry) of the filament constituting the outer sleeve being
  • the insulator according to the invention, one can play on the coefficients of thermal expansion of the inner sleeve, the first and second chambers, and the outer sleeve. If the helical winding angle is very important, there is very little circumferential expansion. On the other hand, if the winding angle is small, there will be a high coefficient of circumferential expansion.
  • the outer sleeve has a lower helical winding angle than the winding angle of the fiberglass constituting the first and second chambers, it is ensured that the coefficient of thermal expansion of the outer sleeve is greater large than the coefficient of thermal expansion of the first and second chambers.
  • the insulator it is possible to achieve a shrinking by temperature expansion of each of the parts constituting the insulator.
  • the outer diameter of the inner sleeve is larger than the inner diameter of the first and second chambers.
  • the diameter outside of the first and second chambers is larger than the inside diameter of the outer sleeve.
  • the frustoconical portion of each of the first and second chambers is preceded by a cylindrical portion of smaller diameter than the cylindrical portion following the frustoconical portion.
  • the volume of the chamber is reduced and therefore the amount of SF6 is also reduced. This reduces the negative impact on the environment.
  • each of the first and second chambers internally has a range of increased diameter and externally a range of reduced diameter, the inner sleeve being fitted on the expanded diameter seats of the first and second chambers, the outer sleeve being fitted on the reduced diameter spans of the first and second chambers.
  • the inner sleeve and the outer sleeve do not protrude. They are entirely contained in the thickness in the wall of the first and second chambers, which thus has a constant diameter internally and externally.
  • the inner sleeve and the outer sleeve are joined to the first and second chambers by gluing with an epoxy resin.
  • the sleeves being assembled both by gluing and by hooping, a particularly strong resistance of the assembly is obtained.
  • the cylindrical portion following the frustoconical portion of the first chamber is substantially longer than the cylindrical portion following the frustoconical portion of the second chamber so that the inner sleeve and the outer sleeve are outside a central zone. of the isolator receiving the breaking chamber.
  • connection between the first and second chambers is located in a zone of weak electric field.
  • the insulator is made by winding a resin-coated fiberglass filament onto a soluble mandrel which is removed after polymerization of the resin in an oven.
  • the isolator is made of a single piece.
  • the insulator has been designated by the general reference 2. It is composed of a first chamber 4 and a second chamber 6.
  • the first chamber 4 consists of a large diameter portion 8, a frustoconical portion 10 and a cylindrical portion of smaller diameter 12.
  • the second chamber 6 consists of a cylindrical portion of large diameter 14, a frustoconical portion 16, and a cylindrical portion of smaller diameter 18.
  • the first and second chambers 4.6 are made separately by winding a fiberglass filament on a mandrel.
  • the mandrel is an aluminum cylinder that turns on itself.
  • the fiberglass is wound on the mandrel.
  • the fiberglass passes through a resin bath to be impregnated with resin.
  • the fiber has a translation movement, which has the effect of creating a helical winding angle of the fiber on the mandrel.
  • the translational speed of the fiber By varying the translational speed of the fiber, the winding angle of the fiber on the mandrel can be varied. If the fiber has a fast translation speed, the winding angle will be small. On the contrary if the fiber has a slow speed of movement, the winding angle on the mandrel will be important.
  • the mandrel coated with the coiled fiberglass is passed through an oven in order to polymerize the resin. After this operation, it is proceeded to the demandrinage, that is to say to the separation of the mandrel and the first or the second chamber.
  • the demandrinage that is to say to the separation of the mandrel and the first or the second chamber.
  • a layer of polyester paper is interposed between the mandrel and the first fiberglass winding layer.
  • the mandrels are chrome-plated on the surface to facilitate the demandrinage. On one side you pull on the first or the second chamber of the other one pulls on the mandrel to take off the first or the second chamber of the mandrel.
  • the first and second chambers are arranged end to end, their ends being in contact.
  • the first chamber internally comprises an increased diameter range of diameter greater than the diameter of the cylindrical portion 8 and externally a range of reduced diameter 22 of smaller diameter than the outer diameter of the cylindrical portion 8.
  • the second chamber comprises internally a scope 24 of increased diameter, the diameter of which is greater than the inside diameter of the cylindrical portion 14 and externally a reduced diameter span 26 whose diameter is smaller than the outside diameter of the cylindrical portion 14.
  • the increased diameter spans 20 and 24 define a space in which an inner sleeve 28 is housed.
  • bearing surfaces 22 and 26 delimit a space in which an outer sleeve 30 is housed.
  • the inner sleeve 28 and the outer sleeve 30 are glued by means of an epoxy adhesive to the end of the first chamber 4 and the second chamber 6.
  • the outer sleeve 30 is glued to the end of the first chamber 4 and the second chamber 6.
  • the inner sleeve 28 and the outer sleeve 30 are assembled by shrinking on the cylindrical portion 8 of the first chamber 4 and the cylindrical portion 14 of the second chamber 6.
  • the coefficient of thermal expansion of the inner sleeve 28 is less than the coefficient of thermal expansion of the first chamber 4 and the second chamber 6.
  • the coefficient of thermal expansion of the outer sleeve 30 is greater than the coefficient thermal expansion of the first chamber 4 and the second chamber 6.
  • figure 3 represents the evolution of the longitudinal and circumferential expansion coefficients as a function of winding angles obtained for a mass fiber ratio of 65%.
  • the curve represents the coefficient of circumferential expansion (c65) and curve 42 the longitudinal expansion coefficient (L65).
  • c65 coefficient of circumferential expansion
  • L65 longitudinal expansion coefficient
  • the winding angle of the filament constituting the outer sleeve is smaller than the winding angle of the fiberglass constituting the first and second chambers 4,6 and the winding angle the filament constituting the inner sleeve 28 is larger than the winding angle of the fiberglass constituting the first and the second chambers 4,6.
  • the outer diameter of the inner sleeve 28 is larger than the diameter of the bearings 20 and 24 of the first chamber 4 and the second chamber 6. Therefore, the inner sleeve 28 can not be mounted on these bearings.
  • the inside diameter of the outer sleeve 30 is smaller than the diameter of the bearing surfaces 22 and 26 of the first chamber 4 and the second chamber 6. As a result, the outer sleeve 30 can not be mounted on these staves 22 and 26.
  • the first chamber 4 and the second chamber 6 When the first chamber 4 and the second chamber 6 are heated to a temperature in the region of 70 ° C., they expand so as to introduce the ends of the cylindrical portions 8 and 14 into the inner sleeve 28.
  • the inside diameter of the cylindrical parts is then 282.32 mm while the outer diameter of the sleeve 28 is 282.2 mm.
  • the outer sleeve 30 is heated to a temperature of 125 ° C so as to introduce the bearing surfaces 22 and 26 inside the outer sleeve 30.
  • the outer diameter of the cylindrical portions 8 and 14 is then 288.33 mm and the inside diameter of the sleeve 30 288.76 mm.
  • the inner sleeve 28 and outer sleeve 30 are joined to the first and second chambers 4,6 by hooping.
  • a clamping force is always present.
  • the inner diameter of the sleeve 28 is 282.56 mm while the outer diameter of the cylindrical portions 8 and 14 is 282.55 mm.
  • the inner diameter of the sleeve 30 is 288.55 mm while the outer diameter of the cylindrical portions 8 and 14 is 288.56 mm.
  • the cylindrical portion 8 of large diameter of the first chamber 4 is much longer than the cylindrical portion 14 of large diameter of the chamber 6. This feature is intended to prevent the cutoff chamber schematically represented by the reference 32, is next to the assembly area of the cylindrical part 8 of the first chamber and the cylindrical portion 14 of the second chamber 6. At each end of the insulator 2 there are few electrical constraints. The assembly of the first chamber 4 and the second chamber 6 is therefore located in an area with low electrical stresses, which avoids degrading the electrical resistance of the insulation.
  • the isolator which has just been described thus has a barrel shape.
  • the smaller diameter portion 12 and the smaller diameter portion 18 allow a reduction in the volume of the chamber and therefore a reduction of the SF6 volume contained within this chamber relative to an insulator of constant section.
  • the volume between the cylinder of constant section 34 and the smaller diameter portions 12 and 18 and the frustoconical portions 10 and 16 represent the volume gained, allowing a reduction of SF6 volume.
  • an insulator comprising, as the embodiment described in reference to Figures 1 and 2 , a part of large diameter, of frustoconical parts associated with the larger diameter part in which the breaking chamber 32 is contained and parts of reduced diameters similar to parts 12 and 18 of the embodiment shown in FIGS. Figures 1 and 2 . Since the insulator is made in one piece, it is impossible to demandrelate. This is why the mandrel is made of a soluble material.
  • Fiberglass is wound on the soluble mandrel. This fiberglass is impregnated with resin. Several helical winding layers are thus made up and down from one end to the other of the insulator. The soluble mandrel coated with fiber glass is then passed through an oven in order to polymerize the resin. After this operation the soluble mandrel is removed. An insulator is thus obtained, made in one piece, having a substantially barrel-shaped shape making it possible to reduce the volume of the SF6 as the first embodiment described with reference Figures 1 and 2 .

Landscapes

  • Insulating Bodies (AREA)
  • Insulators (AREA)
  • Crushing And Pulverization Processes (AREA)

Claims (7)

  1. Isolator aus Verbundmaterial, der dazu ausgelegt ist, eine Unterbrecherkammer zu enthalten, umfassend einen zylindrischen Teil mit zwei Enden, in dem die Unterbrecherkammer untergebracht ist, und einen kegelstumpfförmigen Teil (10, 16) an jedem seiner Enden,
    wobei der Isolator dadurch gekennzeichnet ist, dass er mit einer ersten Kammer und einer zweiten Kammer (4, 6) realisiert ist, wobei jede dieser Kammern einen kegelstumpfförmigen Teil (10, 16) umfasst, auf den wiederum ein zylindrischer Teil (8, 14) folgt, wobei die erste und die zweite Kammer (4, 6) an ihren zylindrischen Teilen (8, 14) Ende an Ende zusammengefügt sind;
    wobei der Isolator ferner eine Innenmuffe (28) und eine Außenmuffe (30) umfasst, wobei die Innenmuffe im Inneren der Kammern (4, 6) angeordnet ist, wobei die Außenmuffe (30) außerhalb der Kammern (4, 6) angeordnet ist, wobei die Innenmuffe (28) und die Außenmuffe (30) die Ende-an-Ende-Anordnung der ersten und der zweiten Kammer (4, 6) überlappen;
    wobei die Innenmuffe (28), die erste und die zweite Kammer (4, 6) und die Außenmuffe (30) aus einem Verbundmaterial durch schraubenförmiges Wickeln eines Glasfaserfilaments realisiert sind, wobei der Wicklungswinkel des Filaments, das die Außenmuffe (30) bildet, kleiner ist als der Wicklungswinkel der Glasfaser, die die erste und die zweite Kammer (4, 6) bildet, wobei der Wicklungswinkel des Filaments, das die Innenmuffe (28) bildet, größer ist als der Wicklungswinkel der Glasfaser, die die erste und die zweite Kammer (4, 6) bildet;
    wobei der thermische Ausdehnungskoeffizient des Materials der Innenmuffe (28) kleiner ist als der thermische Ausdehnungskoeffizient des Materials der ersten und der zweiten Kammer (4, 6), und der thermische Ausdehnungskoeffizient des Materials der Außenmuffe (30) größer ist als der thermische Ausdehnungskoeffizient des Materials der ersten und der zweiten Kammer (4, 6).
  2. Isolator nach Anspruch 1, dadurch gekennzeichnet, dass vor dem kegelstumpfförmigen Teil (10, 16) sowohl der ersten als auch der zweiten Kammer (4, 6) ein zylindrischer Teil (12, 18) vorgesehen ist mit kleinerem Durchmesser als der zylindrische Teil (8, 14), der auf den kegelstumpfförmigen Teil (10, 16) folgt.
  3. Isolator nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sowohl die erste als auch die zweite Kammer (4, 6) innen einen Bereich mit vergrößertem Durchmesser (20, 24) und außen einen Bereich mit verringertem Durchmesser (22, 26) umfasst, wobei die Innenmuffe (28) auf die Bereiche mit vergrößertem Durchmesser (20, 24) der ersten und der zweiten Kammer (4, 6) aufgedrückt ist, wobei die Außenmuffe (30) auf die Bereiche mit verringertem Durchmesser (22, 26) der ersten und der zweiten Kammer (4, 6) aufgedrückt ist.
  4. Isolator nach Anspruch 1, dadurch gekennzeichnet, dass die Innenmuffe (28) und die Außenmuffe (30) an der ersten und der zweiten Kammer (4, 6) durch Schrumpfen angebracht sind.
  5. Isolator nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Innenmuffe (28) und die Außenmuffe (30) an der ersten und der zweiten Kammer (4, 6) durch Kleben mit Hilfe eines Epoxidklebers angebracht sind.
  6. Isolator nach einem der Anspruche 3 bis 5, dadurch gekennzeichnet, dass der zylindrische Teil (8), der auf den kegelstumpfförmigen Teil (10) der ersten Kammer folgt, wesentlich länger ist als der zylindrische Teil (14), der auf den kegelstumpfförmigen Teil (16) der zweiten Kammer (6) folgt, derart, dass die Innenmuffe (28) und die Außenmuffe (30) einer zentralen Zone des Isolators gegenüber liegen, die die Unterbrecherkammer (32) aufnimmt.
  7. Isolator nach Anspruch 1, dadurch gekennzeichnet, dass er durch Wickeln eines harzummantelten Glasfaserfilaments auf einem löslichen Dorn realisiert ist, der nach Polymerisation des Harzes in einem Ofen beseitigt ist.
EP13151108.1A 2012-01-20 2013-01-14 Verbundisolator zur Aufnahme einer Schneidekammer Active EP2617550B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1250591A FR2986101B1 (fr) 2012-01-20 2012-01-20 Isolateur en materiau composite destine a contenir une chambre de coupure

Publications (2)

Publication Number Publication Date
EP2617550A1 EP2617550A1 (de) 2013-07-24
EP2617550B1 true EP2617550B1 (de) 2016-09-21

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EP13151108.1A Active EP2617550B1 (de) 2012-01-20 2013-01-14 Verbundisolator zur Aufnahme einer Schneidekammer

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EP (1) EP2617550B1 (de)
FR (1) FR2986101B1 (de)
RU (1) RU2620585C2 (de)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8709706U1 (de) * 1987-05-27 1987-09-03 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
FR2642783B1 (fr) 1989-02-08 1991-05-17 Geraud Pierre Plancher facilement demontable
FR2645070B3 (fr) 1989-04-04 1991-03-22 Hembert Claude Elements de structure en materiau composite a pieces extremes de fixation, en metal et son procede de fabrication
EP2266788A1 (de) * 2009-06-26 2010-12-29 Bd Invent S.A. Herstellungsverfahren von Verbund-Pleuelstangen und nach diesem Verfahren erhaltene Pleuelstangen
DE102010005090A1 (de) * 2010-01-15 2011-07-21 Siemens Aktiengesellschaft, 80333 Schaltkammer für einen Leistungsschalter sowie Leistungsschalter mit Schaltkammer
RU2419911C1 (ru) * 2010-02-15 2011-05-27 Общество с ограниченной ответственностью Научно-производственное предприятие "ЭЛВЕСТ" Вакуумный выключатель
EP2390890B1 (de) * 2010-05-28 2015-03-25 ABB Technology AG Schaltkammerisolationsanordnung für einen Leistungsschalter

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FR2986101A1 (fr) 2013-07-26
FR2986101B1 (fr) 2014-12-26
EP2617550A1 (de) 2013-07-24
RU2013102514A (ru) 2014-07-27
RU2620585C2 (ru) 2017-05-29

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